Dont be too sure. In the original game, unless you were lucky with the first tree climbing sequence, the most often first achies were the Beat Zabuza and Beat Haku. Really, if it was a steady progresser type achievement list, there would have been a Beaten Mizuki, Beaten Kakashi's Test, Repelled Orochimaru, etc.
And you guys are lucky. Ive still got a fortnight til its coming out here. Already saving my money. technically Im spossed to be looking at buying a plane ticket to Melbourne for christmas, but that can wait..